[patch 08/24] timekeeping: Remove system_time_snapshot::real/boot

From: Thomas Gleixner

Date: Tue May 26 2026 - 13:19:03 EST


All users are converted over to ktime_get_snapshot_id() and
system_time_snapshot::sys.

Remove the leftovers.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxx>
---
include/linux/timekeeping.h | 4 ----
kernel/time/timekeeping.c | 8 --------
2 files changed, 12 deletions(-)

--- a/include/linux/timekeeping.h
+++ b/include/linux/timekeeping.h
@@ -280,8 +280,6 @@ static inline bool ktime_get_aux_ts64(cl
* a selected CLOCK_* and the clocksource counter value
* @cycles: Clocksource counter value to produce the system times
* @sys: The system time of the selected CLOCK ID
- * @real: Realtime system time
- * @boot: Boot time
* @raw: Monotonic raw system time
* @cs_id: Clocksource ID
* @clock_was_set_seq: The sequence number of clock-was-set events
@@ -291,8 +289,6 @@ static inline bool ktime_get_aux_ts64(cl
struct system_time_snapshot {
u64 cycles;
ktime_t sys;
- ktime_t real;
- ktime_t boot;
ktime_t raw;
enum clocksource_ids cs_id;
unsigned int clock_was_set_seq;
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -1196,8 +1196,6 @@ bool ktime_get_snapshot_id(struct system
struct timekeeper *tk;
struct tk_data *tkd;
unsigned int seq;
- ktime_t base_real;
- ktime_t base_boot;

/* Invalidate the snapshot for all failure cases */
systime_snapshot->valid = false;
@@ -1239,18 +1237,12 @@ bool ktime_get_snapshot_id(struct system
offs_sys = *offs;
base_raw = tk->tkr_raw.base;

- /* Kept around until the callers are fixed up */
- base_real = ktime_add(base_sys, tk_core.timekeeper.offs_real);
- base_boot = ktime_add(base_sys, tk_core.timekeeper.offs_boot);
-
nsec_sys = timekeeping_cycles_to_ns(&tk->tkr_mono, now);
nsec_raw = timekeeping_cycles_to_ns(&tk->tkr_raw, now);
} while (read_seqcount_retry(&tkd->seq, seq));

systime_snapshot->cycles = now;
systime_snapshot->sys = ktime_add_ns(base_sys, offs_sys + nsec_sys);
- systime_snapshot->real = ktime_add_ns(base_real, nsec_sys);
- systime_snapshot->boot = ktime_add_ns(base_boot, nsec_sys);
systime_snapshot->raw = ktime_add_ns(base_raw, nsec_raw);

/*